Port 3732Mobile Wnn

TCP and UDP port 3732 is assigned to Mobile Wnn, a mobile variant of the Japanese Wnn input-method system.

transport: tcp · udp
in transit: cleartext
assignment: official
risk: 1/10
lookups: 0

also known as m-wnn

Technical Details

what runs on :3732

Mobile Wnn is registered on port :3732 over tcp and udp to Yasunari Yamashita, assigned April 2003. We don't have a technical write-up for it beyond the IANA registry entry.

In nmap's internet-wide scan data this port is never observed open, so if it's open on your network it's more likely a custom or misconfigured service than the registered one.

find what's listening on :3732

this machine

# linux
sudo ss -tulpn 'sport = :3732'

# macos / bsd
sudo lsof -nP -i :3732

# windows (then: tasklist /FI "PID eq <pid>")
netstat -ano | findstr :3732

another host

nmap -sV -p T:3732 <host>
sudo nmap -sU -sV -p U:3732 <host>

run it? the handshake, the implementations you meet in the wild and the flags that matter come from the engineers who do.

add technical details

Security Information

exposure of :3732

risk score

1/ 10safe

routine exposure. this port is rarely the way in on its own — keep it patched and logged and move on.

mobile averages 2.1 across 76 ports — this one sits 1.1 below.

in transit

cleartext

credentials and payloads are readable by anyone on path

assignment

official

registered with iana for this service — scanners fingerprint it by number

reachable over

tcp · udp

udp is connectionless — source addresses are trivially spoofed and it is a reflection favourite

security overview

no security notes recorded for :3732 yet

known exploits, hardening advice, what a compromise looks like — suggest an edit if you know its exposure.

Record

iana registry entry

port: :3732
service: Mobile Wnn
transport: TCPUDP
encryption: cleartext
assignment: iana registered
risk: 1/10safe
category: Mobile
usage: IANA assigns TCP and UDP port 3732 to Mobile Wnn, registered by Yasunari Yamashita in 2003. Wnn is a Japanese input-method system, but there is no evidence here that this assignment is a commonly deployed network listener.
lookups: 0rank 993
added: 2026-10-01
updated: 2026-10-01
references: IANA service name registry — port 3732

Something wrong?

This record is maintained by the engineers who use port 3732. Every field on it is editable — change what's wrong, say how you know, and a reviewer publishes it, usually within a minute. Last touched 2026-10-01.

01edit any field on a page of its own
02a model checks it for accuracy and spam
03clean and confident goes live immediately

edit this record →back to the registry

Related Ports

all 76 in mobile →

the 8 most looked-up other ports in mobile — 76 ports carry that label.

port	service	proto	category	risk	views
:8882	Atlasz Secure App Server	TCP	Web Services	caution	66.9k
:2082	Infowave Mobility	TCP	Network Services	caution	17.7k
:3386	GTP (GPRS Tunneling Protocol)	TCPUDP	Network Services	caution	16.7k
:7401	RTPS DDS Traffic	TCPUDP	Network Services	safe	14.7k
:2948	WAP Push MMS	TCPUDP	Network Services	safe	11.7k
:5222	XMPP Client Connection	TCP	Network Services	caution	11.7k
:3006	Miralix SMS Connector	TCP	Mobile	caution	11.3k
:2949	WAP Pushsecure MMS	TCPUDP	Cloud	safe	10.4k

risk mix of the 8 listed

safe38%
caution63%

0 of 8 encrypted

Port :3732Mobile Wnn

Technical Details

Security Information

Related Ports

Port 3732Mobile Wnn